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The DAG-2.2 (formerly DAG-1) Derailleur Hanger Alignment Gauge from Park Tool can help solve a multitude of derailleur shifting problems, most notably with index shifting systems.
We have 2 left in stock in stock
Warning: Last items in stock!
Note: Not available until December 2016
This tool is extremely steady in operation and is simple to use.
The tool threads directly into the derailleur hanger.
The gauge bar holds a gauge which marks the distance to the wheel.
The gauge then is rotated with the wheel to the 3, 6, 9, and 12 o'clock positions, noting any differences in measurements.
The alignment of the derailleur hanger is accomplished by applying pressure to the tool's arm.
The results can be checked instantly.
The DAG-2 is made of heavy gauge steel and is chrome plated for long life.
Weight: .95kg (2.1lbs)
Park Tool Reference: DAG-2.2